I have a lot on my plate

Do you know the English idiom “to have a lot on (one’s) plate? Look at the conversation below. Can you guess the meaning?

Rebecca: Emily, I was wondering if you could help me move house at the weekend.

Emily: I wish I could, but I have a lot on my plate at the moment. My grandmother is in hospital and my son has a soccer tournament soon. I also have to give a presentation at work in two weeks, and I haven’t started preparing for it yet!

Rebecca: No problem. You really do have a lot on your plate!

Does it mean:

a) you have too much food

b) you have many things to do

c) you have an important event to attend

The answer is below! ↓

 

Answer: b) you have many things to do